Abstract:
:Infectious bursal disease virus (IBDV) is a birnavirus causing immunosuppressive disease in chickens. Emergence of the very virulent form of IBDV (vvIBDV) in the late 1980s dramatically changed the epidemiology of the disease. In this study, we investigated the phylogenetic origins of its genome segments and estimated the time of emergence of their most recent common ancestors. Moreover, with recently developed coalescence techniques, we reconstructed the past population dynamics of vvIBDV and timed the onset of its expansion to the late 1980s. Our analysis suggests that genome segment A of vvIBDV emerged at least 20 years before its expansion, which argues against the hypothesis that mutation of genome segment A is the major contributing factor in the emergence and expansion of vvIBDV. Alternatively, the phylogeny of genome segment B suggests a possible reassortment event estimated to have taken place around the mid-1980s, which seems to coincide with its expansion within approximately 5 years. We therefore hypothesize that the reassortment of genome segment B initiated vvIBDV expansion in the late 1980s, possibly by enhancing the virulence of the virus synergistically with its existing genome segment A. This report reveals the possible mechanisms leading to the emergence and expansion of vvIBDV, which would certainly provide insights into the scope of surveillance and prevention efforts regarding the disease.
journal_name
J Viroljournal_title
Journal of virologyauthors
Hon CC,Lam TY,Drummond A,Rambaut A,Lee YF,Yip CW,Zeng F,Lam PY,Ng PT,Leung FCdoi
10.1128/JVI.00585-06subject
Has Abstractpub_date
2006-09-01 00:00:00pages
8503-9issue
17eissn
0022-538Xissn
1098-5514pii
80/17/8503journal_volume
80pub_type
杂志文章abstract::Adeno-associated virus (AAV) integrates site specifically into the AAVS1 locus on human chromosome 19. Although recruitment of the AAV nonstructural protein Rep78/68 to the Rep binding site (RBS) on AAVS1 is thought to be an essential step, the mechanism of the site-specific integration, particularly, how the site of ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02014-06
更新日期:2007-02-01 00:00:00
abstract::Lentiviruses have long been considered host-specific pathogens, but several recent observations demonstrated their capacity to conquer new hosts from different species, genera, and families. From these cross-species infections emerged new animal and human infectious diseases. The successful colonization and adaptation...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.11.6430-6437.2003
更新日期:2003-06-01 00:00:00
abstract::A cDNA fragment coding for poliovirus capsid polypeptide VP1 was inserted into a simian virus 40 (SV40) genome in the place of the SV40 VP1 gene and fused in phase to the 3' end of the VP2-VP3 genes. Simian cells were infected with the resulting hybrid virus in the presence of an early SV40 mutant used as a helper. In...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.61.12.3862-3869.1987
更新日期:1987-12-01 00:00:00
abstract::Signal peptidase cleavage at the C-prM junction in the flavivirus structural polyprotein is inefficient in the absence of the cytoplasmic viral protease, which catalyzes cleavage at the COOH terminus of the C protein. The signal peptidase cleavage occurs efficiently in circumstances where the C protein is deleted or i...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.3.2141-2149.1998
更新日期:1998-03-01 00:00:00
abstract::APOBEC3G (A3G) is a cytidine deaminase that restricts human immunodeficiency virus type 1 (HIV-1) and other lentiviruses. Most of these viruses encode a Vif protein that directly binds A3G and leads to its proteasomal degradation. Both Vif proteins of HIV-1 and African green monkey simian immunodeficiency virus (SIVag...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01944-13
更新日期:2013-11-01 00:00:00
abstract::The human immunodeficiency virus type 1 Vpu protein is a 16-kDa phosphoprotein which enhances the efficiency of virion production and induces rapid degradation of CD4, the cellular receptor for human immunodeficiency virus. The topology of membrane-inserted Vpu was investigated by using in vitro-synthesized Vpu cotran...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.8.5056-5061.1993
更新日期:1993-08-01 00:00:00
abstract:UNLABELLED:The western honeybee (Apis mellifera) is the most important commercial insect pollinator. However, bees are under pressure from habitat loss, environmental stress, and pathogens, including viruses that can cause lethal epidemics. Slow bee paralysis virus (SBPV) belongs to the Iflaviridae family of nonenvelop...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00680-16
更新日期:2016-07-27 00:00:00
abstract::Rhinoviruses (RV) are the major cause of acute exacerbations of asthma and chronic obstructive pulmonary disease (COPD). Rhinoviruses have been shown to activate macrophages, but rhinovirus replication in macrophages has not been reported. Tumor necrosis factor alpha (TNF-alpha) is implicated in the pathogenesis of ac...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00162-06
更新日期:2006-08-01 00:00:00
abstract::We have established a genetic assay for the multimerization of retroviral gag polyproteins. This assay is based on the GAL4 two-hybrid system for studying protein-protein interactions (S. Fields and O. Song, Nature (London) 340:245-246, 1989). In our initial experiments, we generated Saccharomyces cerevisiae plasmids ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.66.8.5157-5160.1992
更新日期:1992-08-01 00:00:00
abstract::The family Geminiviridae comprises seven genera differentiated by genome organization, sequence similarity, and insect vector. Capulavirus, an eighth genus, has been proposed to accommodate two newly discovered highly divergent geminiviruses that presently have no known vector. Alfalfa leaf curl virus, identified here...
journal_title:Journal of virology
pub_type: 杂志文章,评审
doi:10.1128/JVI.00453-15
更新日期:2015-09-01 00:00:00
abstract:UNLABELLED:Respiratory syncytial virus (RSV) is the most important cause of lower respiratory tract infection in young children and the leading cause of infant hospitalization worldwide. Uncontrolled response to RSV is mediated by a toll-like receptor (TLR)-mediated immune response. Resveratrol possesses anti-RSV activ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03637-13
更新日期:2014-04-01 00:00:00
abstract::The release of the ribonucleic acid (RNA)-containing phage MS2 from Escherichia coli is accompanied by cellular lysis at 37 C, whereas at 30 C phage are released from intact cells. Chloramphenicol or rifampin prevents the release of progeny phage particles at both temperatures. Neither drug causes an immediate cessati...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.8.3.257-264.1971
更新日期:1971-09-01 00:00:00
abstract:UNLABELLED:Generalized immune activation during HIV infection is associated with an increased risk of cardiovascular disease, neurocognitive disease, osteoporosis, metabolic disorders, and physical frailty. The mechanisms driving this immune activation are poorly understood, particularly for individuals effectively tre...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01257-14
更新日期:2014-08-01 00:00:00
abstract::Arenaviruses are rodent-borne viruses with a bisegmented RNA genome. A genetically unique arenavirus, Lujo virus, was recently discovered as the causal agent of a nosocomial outbreak of acute febrile illness with hemorrhagic manifestations in Zambia and South Africa. The outbreak had a case fatality rate of 80%. A rev...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01144-12
更新日期:2012-10-01 00:00:00
abstract::Myeloblastosis-associated virus (MAV)-2(0), a virus which was derived from avian myeloblastosis virus and induced a high incidence of osteopetrosis, was compared with avian lymphomatosis virus 5938, a recent field isolate which induced a high incidence of lymphomatosis. The following information was obtained. (i) MAV-...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.17.1.160-167.1976
更新日期:1975-01-01 00:00:00
abstract::Herpes simplex virus type 1 (HSV-1) B capsids are composed of seven proteins, designated VP5, VP19C, 21, 22a, VP23, VP24, and VP26 in order of decreasing molecular weight. Three proteins (21, 22a, and VP24) are encoded by a single open reading frame (ORF), UL26, and include a protease whose structure and function have...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.68.9.5365-5374.1994
更新日期:1994-09-01 00:00:00
abstract::Some strains of the protozoan parasite genus Leishmania are persistently infected with single-segmented double-stranded RNA viruses, which are termed LRV. The function of these cytoplasmic viruses is unknown. In order to address the question of whether LRV affects the parasite's phenotype, pairs of isogenic LRV(+)-LRV...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.7.4122-4126.1995
更新日期:1995-07-01 00:00:00
abstract:UNLABELLED:SSV-type integrases, encoded by fuselloviruses which infect the hyperthermophilic archaea of the Sulfolobales, are archaeal members of the tyrosine recombinase family. These integrases catalyze viral integration into and excision from a specific site on the host genome. In the present study, we have establis...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01637-15
更新日期:2015-11-01 00:00:00
abstract::Among Moloney murine leukemia viruses (Mo-MuLVs) having stop codons other than UAG at the gag-pol junction, Mo-MuLV with UAA, but not with UGA, had a replication disadvantage. Mo-MuLV with a glutamine codon (CAG) at the junction did not replicate. A revertant of this virus consisted of the original virus and a virus w...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.11.6376-6379.1991
更新日期:1991-11-01 00:00:00
abstract::Two major DNA variants have been isolated from serially propagated stocks of the WR strain of vaccinia virus. Restriction enzyme mapping of the two variants with HindIII, AvaI, XhoI, SstII, and SmaI revealed a 6.3-megadalton deletion in the smaller DNA variant. The deletion was mapped at ca. 6.8 megadaltons in from th...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.37.3.1000-1010.1981
更新日期:1981-03-01 00:00:00
abstract:UNLABELLED:CD4+ T cells play a pivotal role in the control of chronic viral infections. Recently, nontraditional CD4+ T cell functions beyond helper effects have been described, and a role for cytolytic CD4+ T cells in the control of HIV infection has been suggested. We define here the transcriptional, phenotypic, and ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00438-15
更新日期:2015-08-01 00:00:00
abstract::The effectiveness of attenuated poliovirus vaccines when given orally to induce both systemic and mucosal immune responses against poliovirus has resulted in an effort to develop poliovirus-based vectors to express foreign proteins. We have previously described the construction of poliovirus genomes (referred to as re...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.4.2643-2649.1996
更新日期:1996-04-01 00:00:00
abstract::Cottontail rabbit papillomavirus induces strictly epithelial tumors in both cottontail and domestic rabbits. A high proportion of the initial benign papillomas progress within 8 to 14 months to invasive carcinomas. With the help of mRNA-specific riboprobes for E6, E7, E1, E2, L1 and L2, we investigated by in situ hybr...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.68.6.3620-3630.1994
更新日期:1994-06-01 00:00:00
abstract::Cell-to-cell spread of tobacco mosaic virus is facilitated by the virus-encoded 30-kDa movement protein (MP). This process involves interaction of viral proteins with host components, including the cytoskeleton and the endoplasmic reticulum (ER). During virus infection, high-molecular-weight forms of MP were detected ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.7.3330-3337.2000
更新日期:2000-04-01 00:00:00
abstract::The initiation of RNA transcription by the virion-bound RNA transcriptase of vesicular stomatitis virus has been examined. Multiple initiation sequences have been observed, two of which have been characterized (pppApCpGp... and pppGpCp...) suggestive of a transcription process which can start at different sites along ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.11.4.487-501.1973
更新日期:1973-04-01 00:00:00
abstract::Northern (RNA) blot analysis was used to determine the spatial and temporal distribution of bovine herpesvirus 1 (BHV-1) transcripts. Total RNA was isolated from Madin-Darby bovine kidney cells which had been infected with BHV-1.2b strain K22 or BHV-1.1 strain Jura in the presence or absence of metabolic inhibitors. C...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.63.11.4882-4889.1989
更新日期:1989-11-01 00:00:00
abstract::The pandemic H1N1 virus of 2009 (2009 H1N1) continues to cause illness worldwide, primarily in younger age groups. To better understand the pathogenesis of these viruses in mammals, we used a mouse model to evaluate the relative virulence of selected 2009 H1N1 viruses and compared them to a representative human triple...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02742-09
更新日期:2010-05-01 00:00:00
abstract::Ribonucleoprotein from cells acutely or persistently infected with measles virus were shown to be infectious by the calcium phosphate technique. Very little or no infectivity was obtained when calcium phosphate precipitation was omitted. Electron microscopy showed that the majority of ribonucleoprotein structures isol...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.32.1.329-333.1979
更新日期:1979-10-01 00:00:00
abstract::The development of cancer vaccines requires approaches to induce expansion and functional differentiation of tumor antigen-specific cytotoxic T lymphocyte (CTL) effectors which posses cytolytic capability and produce cytokines. Efficient induction of such cells is hindered by the poor immunogenicity of tumor antigens ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.13.7411-7424.2003
更新日期:2003-07-01 00:00:00
abstract::As viruses are reliant upon their host cell to serve as proper environments for their replication, many have evolved mechanisms to alter intracellular conditions to suit their own needs. For example, human cytomegalovirus induces quiescent cells to enter the cell cycle and then arrests them in late G(1), before they e...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.6.3451-3459.2003
更新日期:2003-03-01 00:00:00